Playpen



FIG. 1 is a perspective view of a playpen showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines are for the purpose of illustrating portions of the article that form no part of the claim. 

CLAIM I claim the ornamental design for a playpen, as shown and described. 